this post was submitted on 28 Jul 2026
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Finland builds the world's largest sand battery. Site can cheaply store energy for entire month. No "rare earths" or critical materials used. Estimated at $25/KWh (www.cnbc.com)
submitted 3 weeks ago by Lugh@futurology.today to c/futurology@futurology.today
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[–] cogitase@lemmy.dbzer0.com 4 points 3 weeks ago

that’s about 100x more than I was expecting.

That's the construction cost. If the cycle life is 1000, then you would get $0.025/kWh.